Add 15/70 and 15/84
15/70 + 15/84 is 11/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Add the two like fractions:
90/420 + 75/420 = 90 + 75/420 = 165/420 - 165/420 simplified gives 11/28
- So, 15/70 + 15/84 = 11/28
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